EP3003889B1 - Beverage can end having an arcuate panel wall and curved transition wall - Google Patents

Beverage can end having an arcuate panel wall and curved transition wall Download PDF

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Publication number
EP3003889B1
EP3003889B1 EP14734646.4A EP14734646A EP3003889B1 EP 3003889 B1 EP3003889 B1 EP 3003889B1 EP 14734646 A EP14734646 A EP 14734646A EP 3003889 B1 EP3003889 B1 EP 3003889B1
Authority
EP
European Patent Office
Prior art keywords
degrees
wall
beverage
angle
panel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP14734646.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3003889A1 (en
Inventor
Ezekiel Johnson
Brian Fields
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Crown Packaging Technology Inc
Original Assignee
Crown Packaging Technology Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Crown Packaging Technology Inc filed Critical Crown Packaging Technology Inc
Publication of EP3003889A1 publication Critical patent/EP3003889A1/en
Application granted granted Critical
Publication of EP3003889B1 publication Critical patent/EP3003889B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D7/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal
    • B65D7/12—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls
    • B65D7/34—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls with permanent connections between walls
    • B65D7/36—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls with permanent connections between walls formed by rolling, or by rolling and pressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
    • B21D51/2653—Methods or machines for closing cans by applying caps or bottoms
    • B21D51/2661—Sealing or closing means therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/06—Integral, or permanently secured, end or side closures
    • B65D17/08—Closures secured by folding or rolling and pressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2517/00—Containers specially constructed to be opened by cutting, piercing or tearing of wall portions, e.g. preserving cans or tins
    • B65D2517/0001—Details
    • B65D2517/0058—Other details of container end panel
    • B65D2517/0059—General cross-sectional shape of container end panel
    • B65D2517/0061—U-shaped
    • B65D2517/0062—U-shaped and provided with an additional U-shaped peripheral channel

Definitions

  • This invention relates to a container technology, and more particularly to a can end for a beverage can and methods for seaming a beverage can end to a can body.
  • Modern beverage cans include a beverage can body that is drawn and ironed from aluminum stock and a beverage can end that is attached to the body by a double seam.
  • the assignee of the present invention developed lightweight beverage ends, which are generally described in United States Patent Numbers 8328041 , 7370774 , and 8157119 . Some of the ends generally described in the patents are marketed under the trade name SuperEndTM.
  • Competitors have also developed lightweight ends that often incorporate features developed for SuperEnd.
  • United States Patent Numbers 7673768 and 8313004 disclose various lightweight ends, some of which have been commercialized.
  • WO2012/039433 also describes can ends.
  • Modern, lightweight beverage ends are rated to withstand internal can pressurization, as measured by a buckle performance test, often of 85 psi (5.86 bar) or more. Failure often includes loss of the circular profile and buckling of the end which, ultimately, leads to eversion of the end profile. Failure may be initiated by dropping or distorting the can end, or by overpressure within the container, such as when the can undergoes thermal processing or is subjected to high ambient temperature.
  • a version of an end developed by Container Development Limited and marketed by Ball Corporation has been found to have problems with consistency of the seam dimensions upon double seaming to a beverage can.
  • an end and corresponding method provide an end that is lightweight, can be used with a current, conventional chuck, and is believed to provide for reliable and consistent seams.
  • the present invention is not limited to these aspects, but rather encompasses other aspects of the end and combination of features disclosed in the description and stated in the claims.
  • a beverage can end comprising a center panel; an arcuate panel wall that extends outwardly from the center panel; an upwardly-opening annular bead merging into the arcuate panel wall; a lower transition wall extending from an outer end of the annular bead, the lower transition wall being inclined at an angle A2 that is less than 11 degrees from a vertical axis defined when the can end is conventionally oriented; a curved upper transition wall extending outwardly from an upper end of the lower transition wall, the lower transition wall yielding smoothly to the upper transition wall; a substantially flat intermediate wall; a substantially flat upper wall that is inclined more than the intermediate wall and that is inclined at an angle A4 that is at least 13 degrees from said axis; a juncture formed between the intermediate wall and the upper wall; a seaming panel extending from an upper end of the upper wall, the seaming panel having a radius R4 of between 0.050 inches (1.27 mm) and 0.060 inches (1.524 mm
  • angle A2 of the lower transition wall is between 1 degree and 10 degrees, more preferably between 2 degrees and 8 degrees, more preferably, between 3 degrees and 6 degrees, and, in the embodiment in the figures, about 5.5 degrees.
  • intermediate wall is inclined at an angle A3 that is between 50 degrees and 63 degrees, more preferably between 52 degrees and 60 degrees, and, in the embodiment in the figures, about 55 degrees.
  • the upper wall angle A4 is at least 13 degrees, more preferably at least 15 degrees, and, in the embodiment in the figures, approximately 16 degrees.
  • the panel wall is inclined at an angle A1 of between 30 degrees and 60 degrees, more preferably between 40 degrees and 50 degrees, and, in the embodiment in the figures, about 45 degrees.
  • the bead may be approximately symmetric about a vertical centerline.
  • a beverage can end and beverage can body combination included the unseamed beverage end according to the first aspect above and a beverage can body.
  • the beverage can body prior to seaming includes a flange that matches the seaming panel shape and dimensions of the seaming panel radius.
  • the seaming panel has a radius R4 that is the sum of the radius R3 of the flange and the flange metal thickness t.
  • a method for seaming a beverage can end and a beverage can body together includes placing the beverage can end on to a beverage can body, which has a flange that matches the seaming panel shape and dimensions of the seaming panel radius, and the seaming panel having a radius R4 that is the sum of the radius R3 of the flange and the flange metal thickness t.
  • the method includes the step of bringing a chuck into engagement with an exterior surface of the end such that a lowermost point of an anvil of the chuck contacts the juncture of the end and engaging the curl of the end with seaming rolls such that the upper wall is bent up by at least 9 degrees.
  • the upper wall angle A4 is at least 13 degrees. More preferably, the upper wall angle A4 is at least 15 degrees and the upper wall is bent up by at least 11 degrees, and more preferably the upper wall angle A4 is approximately 16 degrees and the upper wall is bent up by at least 13 degrees.
  • the disclosed beverage can end preferably is for double seaming by conventional seaming equipment onto a drawn and ironed beverage can body, such as a necked 211 sized can body.
  • the end preferably is a 206, 204, or 200 size, and the inventors contemplate other industry-accepted sizes.
  • Figure 1 illustrates a cross section of a beverage can end 10 illustrating aspects of the present invention.
  • Can end 10 is a cross section of an end shell prepared by encasing a sample end in a polymer, cutting the shell into a cross section, and then photographing, enlarging, and enhancing the image. Accordingly, can end 10 is dimensionally accurate for an embodiment of the present invention.
  • Can end 10 includes a center panel 12, a curved panel wall 14, a bead 18, a lower transition wall 20, a upper transition wall 22, a intermediate wall 24, a juncture 26, an upper wall 28, a seaming panel 30, and a curl 32.
  • Center panel 12 is circular and includes a pour opening and an opening mechanism, each of which preferably is conventional.
  • the pour opening may be formed by a score (not shown in the figures) in the shape known in the beverage end industry as a large opening end (LOE).
  • the opening mechanism preferably is a convention stay-on-tab (SOT).
  • Center panel 12 in the illustration of Figure 1 is not flat because the cross section shows beading, as will be understood by persons familiar with can end center panels. The particular end shown in Figure 1 is referred to as a DRT style.
  • shell is used in this disclosure to refer to the product of a shell press, including the finished profile.
  • end is used to refer to the shell after a tab has been applied in a conversion press.
  • Can end 10 is illustrated in its unseamed state, and the present invention encompasses a combination can body and end combination in the seamed state, the method for forming the combination, and the can body and end combination in which the unseamed end is positioned on the can body ready for seaming.
  • a curved panel wall 14 extends about center panel 12 such that in transverse cross section, as shown in Figure 1 , panel wall extends outwardly and downwardly from center panel 12.
  • the terms “outwardly” and “inwardly” refer to a radial direction.
  • the terms “upwardly” and “downwardly” refer to vertical direction as the end is conventionally oriented.
  • the terms indicating radial direction and vertical direction are not exclusive. Nor do the terms indicate one is dominant over the other. For example, a part A that extends radially outwardly and from another part B and also extends upwardly from part B by a few degrees may be described in this disclosure and claims as extending outwardly, as extending upwardly, or as both extending upwardly and outwardly.
  • wall 14 may be defined by end points 40 and 42, which are on wall 14 where wall 14 merges with radii R1 and R2.
  • radii R1 and R2 are between 0.015" inches (0.381 mm) and 0.025" inches (0.635 mm).
  • the present invention is not limited to transitions at 40 and 42 that are formed by a single radius.
  • wall 14 may merge smoothly into center panel 12 and the inner bead wall of bead 18 or other configurations.
  • points 40 and/or 42 may be identified by eye.
  • a line drawn between end points 40 and 42 may be inclined at an angle A1 that is between 30 degrees and 60 degrees, preferably between 40 degrees and 50 degrees, and most preferably about 45 degrees.
  • Annular countersink bead 18 preferably forms a semi-circle and preferably is approximately symmetric (within ordinary manufacturing tolerances) about a vertical centerline V-CS.
  • the horizontal dashed line in Figure 2 defines the boundaries of the semi-circular shaped bead 18.
  • the horizontal dashed line may be drawn horizontally from transition point 44 (defined below), from the point at which inner portion of the bead 18 yields to radius R2, or a point chosen such that bead 18 is symmetrical, as will be understood by persons familiar with end reinforcing bead configurations.
  • the semi-circular shape of bead 18 is beneficial in embodiments in which a chuck (now shown in the figures) is positioned in the bead during the seaming process.
  • Lower transition wall 20 extends upwardly from an outer portion of bead 18.
  • Preferably lower transition wall 20 is straight or nearly straight and is defined between transition points 44 and 46.
  • a line between transition points 44 and 46 is inclined from vertical at an angle A2 that is less than 11 degrees, preferably less than 10 degrees, more preferably between 2 degrees and 8 degrees or between 3 degrees and 6 degrees, and in the embodiment shown in the figures about 5.5 degrees.
  • a curved upper transition wall 22 extends from transition 46 to yield to a substantially flat intermediate wall portion 24.
  • Intermediate wall portion 24 merges into upper wall portion 28 at juncture 26.
  • Intermediate wall portion 24 preferably is substantially straight and inclined a preferred angle A3 ( Figure 2 ) of between 50 degrees and 63 degrees, more preferably between 52 and 60 degrees, and in most preferably about 55 degrees.
  • Upper wall portion wall 28 is substantially straight above a transition portion at junction 26 such that a line between the end points of upper wall 28 is inclined at an angle A4 of at least 13 degrees, and more preferably at least 15 degrees.
  • the upper limit of angle A4 is the practical limit on the bending required in the seamer. Because the angle of a conventional chuck is approximately 4 degrees, the magnitude of the angle of deformation during seaming can be calculated by subtracting 4 degrees from A4, such that the magnitude of deflection can be at least 9 degrees and more preferably at least 11 degrees.
  • Seaming panel 30 and curl 32 extend from transition 50.
  • Seaming panel 30 has a radius R4.
  • a portion of a flange 90 of a can body is shown in a position in which end 10 is in position on flange 90 for seaming.
  • the shape of seaming panel 30 matches the shape of flange 90 - that is, there is no significant gap between the upper part of the highly curved flange 90 and the seaming panel 30.
  • the radius R4 of the seaming panel is the sum of the radius R3 of the flange and the flange metal thickness t.
  • Curl 32 preferably is conventional and is chosen together with seaming roller configuration to achieve an industry suitable double seam at commercial line speeds.
  • Can end 10 is configured such that a seaming chuck (not shown in the figures) can extend into bead 18 to contact either the bottom radius of bead 18 and/or the outer wall of bead 18 and a lower portion of lower transition wall 20. Also the chuck will have a point at the lower end of its anvil portion that (optionally) may contact juncture 26. In any regard, upper wall 28 to is bent upwardly and inwardly during seaming.
  • a seaming chuck (not shown in the figures) can extend into bead 18 to contact either the bottom radius of bead 18 and/or the outer wall of bead 18 and a lower portion of lower transition wall 20.
  • the chuck will have a point at the lower end of its anvil portion that (optionally) may contact juncture 26.
  • upper wall 28 to is bent upwardly and inwardly during seaming.
  • the materials of the can end preferably is a 5000 series aluminum alloy or a tin plate steel and the materials of the can body preferably is a 3000 series aluminum alloy or a tin plate steel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
  • Cartons (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Closures For Containers (AREA)
EP14734646.4A 2013-05-31 2014-05-29 Beverage can end having an arcuate panel wall and curved transition wall Active EP3003889B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201361829874P 2013-05-31 2013-05-31
PCT/US2014/039974 WO2014194058A1 (en) 2013-05-31 2014-05-29 Beverage can end having an arcuate panel wall and curved transition wall

Publications (2)

Publication Number Publication Date
EP3003889A1 EP3003889A1 (en) 2016-04-13
EP3003889B1 true EP3003889B1 (en) 2017-04-26

Family

ID=51059596

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14734646.4A Active EP3003889B1 (en) 2013-05-31 2014-05-29 Beverage can end having an arcuate panel wall and curved transition wall

Country Status (20)

Country Link
US (1) US10919664B2 (enExample)
EP (1) EP3003889B1 (enExample)
JP (1) JP2016520026A (enExample)
CN (1) CN105408216B (enExample)
AU (1) AU2014274115B2 (enExample)
BR (1) BR112015030024B1 (enExample)
CA (1) CA2913916C (enExample)
DK (1) DK3003889T3 (enExample)
ES (1) ES2634522T3 (enExample)
JO (1) JO3258B1 (enExample)
MA (1) MA38689B1 (enExample)
MX (1) MX375335B (enExample)
MY (2) MY174736A (enExample)
PL (1) PL3003889T3 (enExample)
RU (1) RU2655906C2 (enExample)
SA (1) SA515370219B1 (enExample)
SG (1) SG11201509696PA (enExample)
TN (1) TN2015000518A1 (enExample)
WO (1) WO2014194058A1 (enExample)
ZA (1) ZA201508758B (enExample)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
US10246217B2 (en) 2001-07-03 2019-04-02 Ball Corporation Can shell and double-seamed can end

Families Citing this family (4)

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Publication number Priority date Publication date Assignee Title
WO2014194058A1 (en) 2013-05-31 2014-12-04 Crown Packaging Technology, Inc. Beverage can end having an arcuate panel wall and curved transition wall
US10246250B2 (en) 2016-04-21 2019-04-02 Crown Packaging Technology, Inc. Beverage can having a grommet
CN108438434B (zh) * 2018-04-16 2023-12-15 苏州斯莱克精密设备股份有限公司 一种耐压基本盖、易拉盖以及带易拉盖的易拉罐
US12071280B2 (en) * 2022-01-05 2024-08-27 Ball Corporation Metallic end closure for small diameter container

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Also Published As

Publication number Publication date
MA38689A1 (fr) 2016-06-30
HK1220958A1 (zh) 2017-05-19
MY205618A (en) 2024-10-30
WO2014194058A1 (en) 2014-12-04
MA38689B1 (fr) 2017-01-31
US20140353318A1 (en) 2014-12-04
ZA201508758B (en) 2019-12-18
MX2015016412A (es) 2016-03-03
RU2015156480A (ru) 2017-07-05
BR112015030024B1 (pt) 2021-02-23
CN105408216A (zh) 2016-03-16
BR112015030024A2 (pt) 2017-07-25
CA2913916C (en) 2021-06-22
SA515370219B1 (ar) 2019-10-03
MX375335B (es) 2025-03-06
RU2655906C2 (ru) 2018-05-29
JO3258B1 (ar) 2018-09-16
DK3003889T3 (en) 2017-08-14
SG11201509696PA (en) 2015-12-30
TN2015000518A1 (en) 2016-06-29
PL3003889T3 (pl) 2017-09-29
JP2016520026A (ja) 2016-07-11
CA2913916A1 (en) 2014-12-04
CN105408216B (zh) 2018-03-23
EP3003889A1 (en) 2016-04-13
ES2634522T3 (es) 2017-09-28
US10919664B2 (en) 2021-02-16
MY174736A (en) 2020-05-12
AU2014274115A1 (en) 2015-12-17
AU2014274115B2 (en) 2018-01-18

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